Improved foot-press



N. C. STILESV Foot Press.

No. 53,499. Patented March-27, 1866.

NITED STATES PATENT Caries.

N. C. STILES, OF WEST MERIDEN, CONNECTICUT.

IMPROVED FOOT-PRESS.

Specification forming part of Letters Patent No. 53,499, dated March 27,1866.

To all whom it may concern- Be it known that I, N. C. STILEs, of WestMeriden, in the county of New Haven and State of Connecticut, haveinvented a new and Improved. Foot-Press and I do hereby declare that thefollowing is a full, clear, and exact de scription thereofiwhieh willenable those skilled in the art to make and use the same, referencebeinghad to the accompanying drawings, forming part of thisspecification, in which Figure 1 represents a side elevation of thisinvention. Fig. 2 is a plan or top View of the same. Fig. 3 is adetached elevation of a modification of the same.

Similar letters of reference indicate corresponding parts.

This invention consists in the arrangement of two segmental cams, onerolling on the other, in combination with a suitable footpiece ortreadle and with the working-lever, which imparts motion to the slide orhead carrying the punch in such a manner that, by the combined action ofthe segmental cams and foot-lever, a powerful motion can be imparted tothe punch, and by changing the cams any desired motion can be given tothe punch, quick at the beginning and slow at the end, according to thenature of the work or material to be punched.

The invention consists, also, in providing the segmental cams with cogs,so as to compel them to travel together and to impart to the punch apositive motion. In combination with the segmental cams a clutch orother equivalent device is applied, constructed according to the shapeof the cams, for the purpose of keeping the cogs of said cams in gear.

A represents a table or platform, which is supported by legs B, and fromwhich rises a standard, 0, of any suitable form or shape to suit thedies and punches to be used in the press. The front edge of thisstandard is provided with suitable dovetailed ways a, to receive theslide D, in which the punch E is fastened by a set-screw or any othersuitable means. A reciprocating motion is imparted to the slide D by theaction of a workinglever, F, which has its fulcrum on a pivot, 12, andto which an oscillating motion is imparted by the action of twosegmental cams, G H, one of which is suspended from a pivot, c, in therear end of the working-lever F, whereas the other swings on a pivot, d,secured in suitable lugs projecting from the rear edge of the standard Cor table A. The working-surfaces of the cams are either both eccentricwith the pivots which form their fulcra, as shown in Fig. 1, or one ofthe cams may be made concentric with its fulcrum, and the othereccentric, as shown in Fig. 3, so that in either case arocking motion isimparted to the working-lever by imparting to the cams an oscillatingmotion. The desired motion is imparted to the cams Gr H by a treadle orfoot-lever, I, which is formed by a continuation of the cam H beyond itsfulcrum, as shown'in Figs. 1 and 3, and a weight, J, is applied to ashort arm or ear projecting from the rear edge of the cam H or treadleI, for the purpose of carrying the cams back to the position shown inFigs. 1 and 3 and to lift the punch from the work.

In order to cause the cams to travel together and to prevent theirWorking-surfaces from slipping on each other, they (the cams) areprovided with cams e f, which gear in each,

other, as clearly shown in the drawings, and clutches K are applied tokeep the cogs in gear. These clutches maybe made to catch over the rimsof the toothed segments, as shown in Figs. 1 and 2 of the drawings; or,instead of these clutches, weights or springs might be applied to theupper segment, G, to keep the same in gear with the lower segment, H. InFig. 3 simple pins armed with frictionrollers are used to perform theoffice of the clutches, and these roller-pins are secured in thestandard C and arranged so as to bear on the inner circumference of therim of the segment G. When clutches are used, such as shown in Figs. 1and 2, they must be so arranged that they can accommodate themselves tothe varying position of the cams, which purpose is effected bysupporting them on piv ots g.

The position of the punch in relation to the die is regulated by aseries of slips, h, of metal, which are inserted in a recess, 1', in theinner surface of the slide D, above and below, the front end of theworking-lever F. By increasing the number of slips above and decreasingtheir number below the punch is raised, and vice versa; or, instead ofplacing these slips in the recess '5, they may be placed under an arm,which forms the connection between the working-lever and the segment G,as shown in Fig. 3 of the drawings. The throw of the punch can beincreased or decreased by chan ging the shape of the cams G H, and thesecams may also be so arranged that they give any desired motion to thepunch, quick at the beginning and slow at the end, as previously stated.

What I claim as new, and desire to secure by Letters Patent, is-

1. The segmental cams G H, in combination with the Working-lever F,punch E, and footle'ver I, constructed and operating substantially asand for the purpose set forth.

N. (J. STILES.

WVitnesses SAMUEL S. WrLooX, ORVILLE H. PLATT.

